High Voltage Interrupter is a current interruption device used in high voltage power systems. It can quickly cut off the current when a current fault occurs to protect power equipment from damage. It usually uses a vacuum medium to extinguish the arc to ensure the safety and stability of the circuit.
The Main Components Are As Follows
1. Arc extinguishing chamber: provides efficient arc extinguishing capability, can quickly cut off the current, and reduce the damage of arc to the equipment.
2. Contact: adopts high temperature resistant and wear-resistant materials to extend the service life and reduce the need for maintenance.
3. Insulator: has excellent electrical insulation performance to ensure the safety and stability of the equipment.
4. Sealing device: ensures the sealing of the internal environment, prevents the entry of external pollutants, and maintains good working condition.
5. Drive device: provides precise and fast contact operation to ensure efficient current interruption.
6. Shell: provides physical protection, resists external impact, corrosion and harsh environmental influences, and increases the durability of the equipment.
Technical Parameters
| MAIN TECHNICAL DATA | ||
| Data | Unit | Value |
| Rated Frequency | Hz | 50 |
| Rated Voltage | kV | 12 |
| Rated Short-duration Withstand Voltage(1min) | kV | 48 |
| Rated Lightning Impulse Withstand Voltage | kV | 85 |
| Rated Current | A | 4000 |
| Circuit Resistance at the Lowest Rated Contact Force | μΩ | ≤10 |
| Rated Short-circuit Breaking Current | kA | 50 |
| Rated Short-circuit Breaking Current Breaking Times | Times | 30 |
| Rated Short-duration Withstand Current | kA | 50 |
| Rated Duration of Short-circuit | s | 4 |
| Rated Peak Withstand Current | kA | 125 |
| Rated Short-circuit Making Current | kA | 125 |
| Rated Operaing Sequence | open-180s-co-180-co | |
| Contact Stroke | mm | 9±1 |
| Contact Closing Force | N | 210±50 |
| Force Required to hold contacts open at full stroke | N | 280±50 |
| Average Opening Speed (first 75% stroke) | m/s | 1.2±0.2 |
| Average Closing Speed (last 30% stroke) | m/s | 0.6±0.2 |
| Rated Contact Force | N | 6750+750 |
| Contact Force at the Touch Point | N | 4750+500 |
| Contact Closing Bouncing Duration | ms | ≤2 |
| Contact Opening and Closing Non-simultaneity | ms | ≤2 |
| Storage Life | Years | 20 |
| Contact Erosion Limit | mm | 3 |
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